| | Mountain Park CDP (Gwinnett County), GA | Milledgeville, GA | United States |
| Percent Religious | 47.1% | 30.3% | 49.4% |
| Baptist | 14.9% | 11.8% | 8.2% |
| Episcopalian | 0.5% | 0.6% | 0.6% |
| Catholic | 9.2% | 2.3% | 19.7% |
| Church of Jesus Christ | 0.9% | 1.4% | 2.1% |
| Lutheran | 0.7% | 0.1% | 2.4% |
| Pentecostal | 2.0% | 1.4% | 1.9% |
| Methodist | 6.8% | 5.6% | 4.0% |
| Presbyterian | 2.1% | 0.7% | 1.7% |
| Other Christian | 7.9% | 6.3% | 6.7% |
| Judaism | 0.0% | 0.0% | 0.7% |
| Eastern | 0.9% | 0.0% | 0.5% |
| Islam | 1.1% | 0.0% | 0.9% |